Tubing and printing paper bags



(No Model.) 2 Sheets-Sheet 1.

A. J. BOYNTON.

TUBING AND PRINTING PAPER BAGS. I No. 301,084. Patented July I, 1884.

(No Model.) I 2 Sheets-Sheet 2.

-A. J. BOYNTON.

TUBING AND PRINTING PAPER BAGS. I

Patented July 1, 1884.

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TUBING AND PRlNTlNG PAPER BAGS.

SPECZPI ATION forming part of Letters Patent no. 301,084, dated July 1,1884.

' Application filed July 27, 1883. (No model.)'

To all whom it may concern:

Be it known that I, ANDREW J. BOYNTON,

a citizen of the United States,residing at Malden, in the county ofMiddlesex and State of Massachusetts, have invented a new andusefulImprovement in Tubing and Printing Paper Bags, of which 'the followingis a specification. I

My invention relates to improvements in machinery for tubing andprinting paper bags, and combines the processes of ta ing the web fronnaroll, pasting one edge of the web, folding and pressing it into aflattened tubular form, then printing one side of the tube and afterwardcutting off a proper length for a bag, leaving the part so cut off apasted, folded,

1 and printed tube ready for bottoming, these several operations beingperformed successively and continuously upon one and the same machine.

In the drawings, Figure 1 shows a longitudinal section of my machine;Fig. 2, a plan 5' Fig. 8, a View of the knife; Fig. 4, an arrangement ofthe cylinders for printing two colors, and Figs. 5 and 6 details of theinking mechanism.

A represents the frame of my machine. Power applied to the driving-shaftj is communicated by gears to the other portions of the machine, 7'being the gear on the drivingshaftj, h the gear 011 roll h, g the gearon roll 1 a an intermediate gear between the roll it and cylinder 3, 3the gear on cylinder 3, 2 the gear on cylinder 2, p the intermediategear between the cylinder 3 and the ink-roll t, and 1/ the gear upon theink-roll. q is a dragwheel geared to the cylinder 2.

The tubing mechanism I have shown is a well-known device for thatpurpose, abeing a paste-trough b, a wheel. revolving in the paste andapplying it to the edge of the web it asit passes over the roller 0. Theweb (Z is folded into the form of tube (1 as it passes under the formera and fingers f f, being drawn forward and pressed flat by the rolls 9it, between which it passes. This completes the tubing, and as I make noclaim to this mechanism more than to any other tubing mechanism, in this0011- nection, I shall hereinafter refer to it by the figure 1 as atuber.

tuber 1 it passes between two cylinders, 2

After the tube d has left the and 3. On the cylinder 2 is a knife, is,projecting from its surface, and adjusted to work in a groove, is, inthe cylinder 3. At each revolution of the cylinders 2 and 3 the knifeIt: cuts off a portion of the tube of the proper length for a bag.

On the cylinder 3 I secure aform, 4, of type or other matters to beprinted, curved to fit the periphery of the cylinder, which form isinked as the cylinder revolves, and then carried up and pressed againstthe paper tube as it passes between the cylinders 2 and 3, printing thetube, so that when it is cut off by the knife in, as before described,it is a complete printed tube, needing only the subsequent op eration offolding and pasting the bottom to convert it into a complete printed bagready for use. v

IVhen it is necessary to print two colors up on a bag, I insert betweenthe tuber l and the printing and cutting-off cylinders 2 and3 two othercylinders, 5 and 6, as shown in Fig. 4, the cylinder 6 having upon it aform, 7 which form prints one color upon the tube, while the other coloris printed by the form 4:, as before specified. Other cylinders may in asimilar manner he introduced for printing other 001- ors before thebag-length is cut from the tube.

As the tube passesfrom the machine after it is printed and cut off it isreceived by the guides m, which are made to present their edges onlytothe tube to avoid friction andprevent blurring of the fresh ink. Theseguides are so arranged as to pass the bag clear of the machine to asuitable receptacle.

For properly inking the form I place beneath the cylinder 3 a frame, FF, to which are attached the inking devices. a is the fountain, and thefountain-roll, both supported by the bracket 0'". s is the vibrator-rollconnected to a shaft, 8, 011 the frame F. t is the ink-roll, connectedby gears t p with the cylinder 8. u a are distributing-rolls, and u aare changers, usually of metal, automatically reciprocatedlongitudinally to break up the surface of the ink on the distributers u.a arethe form-rolls, which spread the ink upon the form. a are riders,which by their weight serve the purpose of keeping the form-rolls inposition, andalso aid in breaking up the surface of the ink upon theform-rolls. The

- alternately into contact with the fountain-roll riders and form-rollsare sometimes kept in position by springs bearing upon their journals. Acam-groove upon the wheel 3", at-' tached to the shaft of cylinder 3,operates, through a lever, 12, connecting-rod o, lever e", andconnecting-rod 1: to turn the fountainroll a prescribed distanceby meansof the pawl and ratchet r, and to move the vibrator-roll and theink-roll, thus feeding the ink to the ink-roll. The base of the frame FF is madein two parts, as shown, the part F being rigidly attached tothe frame A of the machine, while the part F can be raised or lowered bymeans of set-screws w, and fastened in position by means of set-screwsw, in order to adjust the form'rolls to the surface of the form. As thecylinder 3 carries by its gears and cam the cylinder 2 and the inkingapparatus, it develops What is called backlashi. 6., the cylinder 3will, if the gears are not exactly adjusted, turn more slowly than thecylinder 2, and prevent the proper action of the knife k in the groove70. To regulate this action I have therefore applied a drag-wheel, q, tothe gear on cylinder 2, which drag-wheelis mounted on a bracket attachedto the frame A, and is independent of all other parts of the mechanismexcept that cylinder, which its Weight retards sufficiently to allow theproper registration of the knife 70 in the groove 70'.

of the other cylinder, and one of said cylinas described.

I make no claim here to the inking mechanism shown in the drawings,anddescribed in the specification, that being inserted to illustrate theoperation of the printing portion of 5 my invention, and it 'being myintention to make a separate application for Letters Patent thereon.

I do not claim, broadly, the device shown in the specification anddrawings for preventing backlash, but as in combination with themechanism set forth.

What I claim as my invention is- 1. The combination of a mechanism,substantially as described, 1, by which a web of 45 paper is pasted,folded, and pressed flat, with two opposing revolving cylinders, 2 and3, one of said'cylinders having upon it a bent type-form, 4, impingingupon the periphery 5o ders having a projecting knife, k, working in agroove, 70, in the other cylinder, the said cylinders receiving from thetubing mechanism a completed flattened tube, printing it,

and cutting it into bag-lengths, substantially 55 2. The combination,with the cutting-cylinders 2 and 3, of a drag-wheel, q, adapted toregulate the registering of the knife is and groove is in thecutting-cylinders, substan- 6o tially as described.

ANDREW J. BOYNTON. I

1 IVitnesses:

Gulls. F. SLEEPER, A. 13. 001mm.

